131333555040021 has 32 divisors (see below), whose sum is σ = 195046071292800. Its totient is φ = 87340703535360.

The previous prime is 131333555040007. The next prime is 131333555040071. The reversal of 131333555040021 is 120040555333131.

131333555040021 is a `hidden beast` number, since 1 + 3 + 1 + 33 + 35 + 550 + 40 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 131333555040021 - 2⁹ = 131333555039509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131333555040071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166371165 + ... + 167158701.

It is an arithmetic number, because the mean of its divisors is an integer number (6095189727900).

Almost surely, 2^{131333555040021} is an apocalyptic number.

It is an amenable number.

131333555040021 is a deficient number, since it is larger than the sum of its proper divisors (63712516252779).

131333555040021 is a wasteful number, since it uses less digits than its factorization.

131333555040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802706 (or 802700 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 131333555040021 in words is "one hundred thirty-one trillion, three hundred thirty-three billion, five hundred fifty-five million, forty thousand, twenty-one".